Apply arithmetic mean of frequency distribution to find the expected value of a random variable The expected value of discrete random variable as summation of product of discrete random variable by ...

Experts say obstacles include recruitment, funding and institutional support. Jahsha Tabron, the 2022 Delaware teacher of the year, taught special education for more than two decades and cherished ...

Positive teacher-student interaction can exert a positive influence on student engagement and math performance. As an important part of teacher-student interaction, emotional support of a teacher ...